Cold Worked R30605 Cobalt vs. Cold Worked R05200 Tantalum
Cold worked R30605 cobalt belongs to the cobalt alloys classification, while cold worked R05200 tantalum belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is cold worked R30605 cobalt and the bottom bar is cold worked R05200 tantalum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 34 | |
| 1.1 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 81 | |
| 69 |
| Tensile Strength: Ultimate (UTS), MPa | 1900 | |
| 540 |
| Tensile Strength: Yield (Proof), MPa | 1600 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 140 |
| Melting Completion (Liquidus), °C | 1410 | |
| 3020 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 140 |
| Thermal Conductivity, W/m-K | 9.6 | |
| 59 |
| Thermal Expansion, µm/m-K | 12 | |
| 6.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 17 |
| Embodied Water, L/kg | 450 | |
| 650 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 6.2 |
| Stiffness to Weight: Bending, points | 21 | |
| 11 |
| Strength to Weight: Axial, points | 55 | |
| 9.0 |
| Strength to Weight: Bending, points | 36 | |
| 8.8 |
| Thermal Diffusivity, mm2/s | 2.5 | |
| 25 |
| Thermal Shock Resistance, points | 52 | |
| 32 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.010 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 46.4 to 57 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.0015 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 0.010 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.020 |
| Nickel (Ni), % | 9.0 to 11 | |
| 0 to 0.010 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Oxygen (O), % | 0 | |
| 0 to 0.015 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.0050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tantalum (Ta), % | 0 | |
| 99.8 to 100 |
| Titanium (Ti), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 14 to 16 | |
| 0 to 0.050 |